TW468079B - Liquid crystal display device with a condenser unit - Google Patents
Liquid crystal display device with a condenser unit Download PDFInfo
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- TW468079B TW468079B TW088109348A TW88109348A TW468079B TW 468079 B TW468079 B TW 468079B TW 088109348 A TW088109348 A TW 088109348A TW 88109348 A TW88109348 A TW 88109348A TW 468079 B TW468079 B TW 468079B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133618—Illuminating devices for ambient light
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
- G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/066—Adjustment of display parameters for control of contrast
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
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- Chemical & Material Sciences (AREA)
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- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal Display Device Control (AREA)
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
4 68 (Π 9 五、發明說明（1)4 68 (Π 9 V. Description of the invention (1)
[發 Ί的技術領域] 明係有關具備集光機構之液晶顯示器者 [習_術] (LCD/赛靜uid Crystal Display)。 LCi)係由電壓控制以作成顯示影像，具有小型、薄型、 低消費電力等優點而於〇 A機器，AV機器等領域中推展其實 用化。第1 7圖為該LCD板斷面圖。如圖，係於第1破璃基板 101上按每一畫素形成晝素電極102，以覆蓋晝素電極1〇2形 成配向膜103。又於對向的第2玻璃基板104上，以相對於複 數畫素電極102形成共通電極105,並為覆蓋該元件形成配 向膜106。而於第1及第2玻璃基板10Γ 1〇4間封入液晶 107。 液晶107在電氣光學上具有異向性，因此於晝素電極 102與共通電極105間施加電壓而於液晶形成電場時，光的 透過率將依電場強度而變化。利用該性質對每一晝素施加 不同電壓以變化其透過率。並由背後為照光部，即所謂背 光（背後照明：back 1 ight)照明可作成呈現所須亮度的畫 素集合體顯示畫像。 尤其於攜帶型電視，輕巧型視頻攝影機（handy video camera )等用為監視器時，多於屋外使用，對此有為利用豐 富外光以企顯示畫面可視化而大幅降低總消耗電力之附有 集光機構LCD的開發。 第18圖為表示附有集光機構LCD的侧剖面圖。係於鄰 接LCD板100設置備有·導光板in;擴散部112;反射部U3;[Technical Field of Development] The Ming Department is concerned with liquid crystal displays with light-collecting mechanisms. [Xi_Technology] (LCD / saijing uid Crystal Display). LCi) is a display image that is controlled by voltage. It has the advantages of small size, low profile, and low power consumption. It has been put into practical use in fields such as 0A equipment and AV equipment. Figure 17 is a sectional view of the LCD panel. As shown in the figure, a day element electrode 102 is formed on each first broken glass substrate 101 for each pixel, and an alignment film 103 is formed to cover the day element electrode 102. A common electrode 105 is formed on the second glass substrate 104 opposite to the plurality of pixel electrodes 102, and an alignment film 106 is formed to cover the element. A liquid crystal 107 is sealed between the first and second glass substrates 10? 104. The liquid crystal 107 has anisotropy in electrical optics. Therefore, when a voltage is applied between the day electrode 102 and the common electrode 105 to form an electric field in the liquid crystal, the transmittance of light will change depending on the intensity of the electric field. Use this property to apply a different voltage to each day element to change its transmittance. The backlight unit is called the backlight (back light: back 1 ight) lighting, which can be used to create a pixel assembly display image showing the required brightness. Especially for portable TVs, handy video cameras, etc., which are used as monitors, they are more often used outside the house. For this, there is an attached set to greatly reduce the total power consumption by using rich external light to visualize the display screen. Development of optical LCD. Fig. 18 is a side sectional view showing an LCD with a light collecting mechanism. Attached to the LCD panel 100 is provided with a light guide plate in; a diffuser 112; a reflective U3;
C:\Program Files\Patent\310664.ptd 4 6 8 0 7 9 五、發明說明（2) 光源11 4及集光部1 1 5之照光部11 0，即所謂背光部1 1 〇。上 、 述LCD板100及背光部110係以殼體120覆罩，而將LCD板100 之顯示領域與集光部115由殼體120露出。 LCD板100具有上述斷面構造，且具控制電路於輸入影 像訊號時，對應於該訊號控制施加於t晝素電極電壓以變 化液晶透過率。 _ 光源114係於背後設置反射器.gflector) 1 16之 LED，EL (electro luminescent)讀馨f 日光灯等。導光板 111多使用丙烯樹脂，聚破酸酯，等的透明材料。擴散 部11 2及反射部1 1 3則分別設於導光板1 11之前面及背面，亦 可使用於導光板111施加擴散加工或亂反射加工形成為一 體者。集光部115係以露出在殼體120的領域將太陽光或室 内的照明光等外光取入背光部11 〇。又集光部1丨5係以光學 方式連接於導光部111，可使用例如導光板111與另外的透 鏡，或導光板111與透鏡加工成為一體者。C: \ Program Files \ Patent \ 310664.ptd 4 6 8 0 7 9 V. Description of the invention (2) The light source 11 4 and the light collecting portion 11 of the light collecting portion 1 15 are the so-called backlight portion 1 1 0. The above-mentioned LCD panel 100 and the backlight portion 110 are covered with the casing 120, and the display area and the light collecting portion 115 of the LCD panel 100 are exposed from the casing 120. The LCD panel 100 has the above-mentioned cross-sectional structure, and has a control circuit that controls the voltage applied to the electrode electrode to change the liquid crystal transmittance in response to the signal when an image signal is input. _ The light source 114 is equipped with a reflector (gflector) 1 16 LED, EL (electro luminescent) reading lamp, fluorescent lamp, etc. on the back. The light guide plate 111 is mostly made of a transparent material such as acrylic resin, polyester ester, or the like. The diffusing portion 11 2 and the reflecting portion 1 1 3 are respectively provided on the front surface and the back surface of the light guide plate 1 11, and the light guide plate 111 can also be formed by applying a diffusion process or a random reflection process. The light collecting unit 115 is configured to take in external light, such as sunlight or indoor illumination light, into the backlight unit 110 in a region exposed to the housing 120. The light collecting section 1 to 5 are optically connected to the light guide section 111. For example, the light guide plate 111 and another lens may be used, or the light guide plate 111 and the lens may be integrally processed.
由光源114射出的内部光，或由集光部115取入的外光 被導於導光扳1Π，由反射部113作亂反射。亂反射後的光 在擴散部U 2將其一部分擴散後照射於[CD板1 〇 〇 〇其餘部 分則向反射部113反射。如上述内部光或由集光部取入 導光板111的外光將往返於擴散部11 2與反射部丨丨3間衰減， 且向圖面之水平方向前進。LCD板100本身不發光，唯如上 述使自背後照射的光線透過，且由控制其透過率以顯示其 畫像。 ‘、 上述構成，係於外光豐富的天晴時可關掉光源丨14，僅The internal light emitted by the light source 114 or the external light taken in by the light collecting section 115 is guided to the light guide plate 1Π, and is reflected randomly by the reflecting section 113. The randomly reflected light is diffused in the diffusing section U 2 and irradiated to the [CD plate 1000], and the rest is reflected to the reflecting section 113. For example, the above-mentioned internal light or external light taken into the light guide plate 111 by the light-collecting section will attenuate between the diffusion section 112 and the reflection section 丨 3, and advance in the horizontal direction of the drawing. The LCD panel 100 does not emit light by itself, but transmits light emitted from the back as described above, and its transmittance is controlled to display its image. ‘The above structure is based on the fact that the light source can be turned off when it ’s sunny with abundant outside light.
4 6 8 079 五、發明說明（3) 用集光部11 5取入的外光以照明LCD板100,若於屋内等外光 不充定時，可點燃光源11 4以獲得畫面清晰的顯示。因此可 減低消耗電力較大之光源11 4的使用頻度，以降低總消耗電 力。 [發明所欲解決的課題] 若將光源的開關以手動操作不但煩雜，而且如不於適 切外光量時及時關灯則其關灯機會減少，終其結果不能充 分達到降低消耗電力的目的。 LCD板100的顯示品質係依存於對比與顯示亮度。對比 為透過率最大時與最小時之透過率比。對比愈高畫面顯示 愈清晰。顯示亮度表示晝面明亮度，係由液晶的最大透過 率及背光照明度決定。背光照明度在使用取入外光時將 依外光的亮度變動。 液晶的透過率雖受施加於晝素電極102與共通電極1〇5 的電位差控制，准習用供於LCD板之液晶驅動訊號的施加電 壓範圍雖外光量變化亦為不變。 又於外光量較少狀況下可將光源114點燃以補足表面 亮度。然而如依晴天時屋外明亮度為基準設定LCD的亮度 及對比，該光源1 1 4的亮度則較外光為低。因此，為獲得LCD 的充分亮度，需將光源114的亮度提高至與晴天屋外光相當 的程度，由而不能有效地減低消耗電力》反之若將光源114 點燃，以遮斷外光時亮度設定亮度及對比，則於晴天屋外 時，外光量過剩以致將液晶透過率控制為最低以顯示全黑 亦不能將光完全遮斷，又於顯示白色時，透過光過強而發生4 6 8 079 V. Description of the invention (3) Use the external light collected by the light collection unit 115 to illuminate the LCD panel 100. If the outside light is not charged inside the room, etc., the light source 11 4 can be ignited to obtain a clear display. Therefore, the frequency of use of the light source 114 having a large power consumption can be reduced to reduce the total power consumption. [Problems to be Solved by the Invention] If the light source switch is manually operated, it is not only complicated, but if it is not turned off in time when the amount of external light is appropriate, the chance of turning off the light will be reduced, and the result will not be sufficient to reduce the power consumption. The display quality of the LCD panel 100 depends on contrast and display brightness. Contrast is the ratio of the transmittance between the maximum and minimum transmittances. The higher the contrast, the clearer the display. The display brightness indicates the daytime brightness, which is determined by the maximum transmittance of the liquid crystal and the brightness of the backlight. The backlight illuminance varies depending on the brightness of external light when using external light. Although the transmittance of the liquid crystal is controlled by the potential difference applied to the day electrode 102 and the common electrode 105, the applied voltage range of the liquid crystal driving signal for the LCD panel, which is used conventionally, is constant despite the change in the amount of light. When the amount of external light is small, the light source 114 can be ignited to supplement the surface brightness. However, if the brightness and contrast of the LCD are set according to the outdoor brightness on a sunny day, the brightness of the light source 114 is lower than that of external light. Therefore, in order to obtain sufficient brightness of the LCD, the brightness of the light source 114 needs to be increased to a level equivalent to that of outside light on a sunny day, so that power consumption cannot be effectively reduced. Conversely, if the light source 114 is ignited to block the brightness when the light is blocked In contrast, when the house is sunny, the amount of external light is excessive, so that the transmittance of the liquid crystal is controlled to the minimum to display full black, and the light cannot be completely blocked. When the white light is displayed, the transmitted light is too strong.
C:\ProgramFiles\Patent\310664.ptd 第 7 頁 468079 五、發明說明（4) 清晰性降低的問題。 本發明有鑑於上述問題，於附有採入外光之集光機構 LCD，提供一種能因應外光量自動將光源11 4關熄以減低消 耗電力，並且能自動變化LCD板之顯示特性以提高清晰性的 裝置為目的。 [解決課題的手段] 本發明為解決上述課題而作，係在一對基板對向面形 成之液晶驅動用電極施加預定電潘範圍的電壓以控制液晶 透過率而為顯示的液晶顯示板；及設於該液晶顯示板鄰近 處之備有取入外光的集光部及用以發光之光源，且對前述 液晶顯示板進行照射的照光部之附集光機構液晶顯示器 中，能因應於外光量自動變化最低透過率，對比，光源的點 燃關熄，以及開閉蓋部等顯示特性的附集先機構之液晶顯 示装置。 [發明的實施形態] 第1圖為表示本發明第1實施形態的附集光機構LCD的 側剖面圖。與習用LCD —樣，係鄰接於LCD板1〇〇設導光板 111;擴敢部112;反射部113;光源114及具有集光部115的背 光部110。該LCD板100及照光部11〇，即所謂之背光部11〇係 由一设體120覆罩，而將LCD板1〇〇之顯示領域及第光部115 自殼體120露出。 、 外觀上與習用LCD的不同係於殼體12〇之集光部115同 一侧面上設受光元件1。受光元件丄係由殼體12〇露於外部 以因應外光光量進行輸出。第2圖係表示於本實施形態所C: \ ProgramFiles \ Patent \ 310664.ptd Page 7 468079 5. Description of the invention (4) The problem of reduced clarity. In view of the above problems, the present invention provides a light collecting mechanism LCD with external light, which can automatically turn off the light source 114 according to the amount of external light to reduce power consumption, and can automatically change the display characteristics of the LCD panel to improve clarity. Sexual device for the purpose. [Means for Solving the Problems] The present invention has been made to solve the above problems, and is a liquid crystal display panel in which a liquid crystal driving electrode formed on a pair of substrates facing each other is applied with a voltage in a predetermined range to control liquid crystal transmittance; and The liquid crystal display with a light collecting mechanism provided in the vicinity of the liquid crystal display panel is provided with a light collecting part for taking in external light and a light source for emitting light, and the light collecting part for irradiating the liquid crystal display panel is capable of responding to external problems. The light quantity automatically changes the minimum transmittance, contrast, liquid crystal display device with a set of advanced mechanisms such as the display characteristics of the light source turning off and on, and opening and closing the cover. [Embodiment of the invention] Fig. 1 is a side sectional view showing an LCD with a light collecting mechanism according to a first embodiment of the present invention. Like a conventional LCD, a light guide plate 111, an enlarged portion 112, a reflective portion 113, a light source 114, and a backlight portion 110 having a light collecting portion 115 are provided adjacent to the LCD panel 100. The LCD panel 100 and the illuminating section 110, the so-called backlight section 110, are covered by a body 120, and the display area and the light section 115 of the LCD panel 100 are exposed from the casing 120. The difference between the external appearance and the conventional LCD is that the light receiving element 1 is provided on the same side of the light collecting part 115 of the housing 120. The light-receiving element is exposed to the outside from the housing 120 to output in accordance with the amount of external light. Fig. 2 is a diagram showing the structure of this embodiment.
4 68 079 五、發明說明（5) 用之光二極體所形成之受光元件1對外光量的輸出電壓變 化。受光元件1的特性係於外光量超越2OOLux時開始增加 輸出電壓，而於lOKLux前後曲線傾斜之電壓變化率為最大， 電歷將繼續上升至光量為lOOKLux程度止。上述受光元件 1，可使用光電晶體，影像感測器成太陽電池等。 LCD板100係對應於受光元件1的輸出變化其顯示亮度 及對比，使光源1 1 4點灯及關灯，並開閉蓋部1 21對應於外光 量做最適當的顯示。如第3圖（a)所示，依外光量4種狀態予 以說明如下： 首先於晴天炎日下之過亮環境（如是50KLux以上）時， 可僅以集光部115取入的外光充分供LCD做清晰顯示。因 此，其蓋部1 2 1開啟，光源11 4為關灯狀態以降低消耗電力。 取入的外光量過多，因而控制施加於晝素電極1〇2的電壓使 液晶的透過率為最低（即顯示”黑”）亦有若干的光透過。由 此在過於明亮的環境下，LCD將自動降低全體顯示亮度。又 於此時眼睛順應於周圍亮度，因此將對比降低較易看清。 因而LCD將自動降低其對比。 其次於一般晴天之屋外明亮度狀態下（如5KLux至 5OKLux未滿），因外光量減少須提高液晶的最大透過率以提 高顯示亮度，同時亦須提高對比以使顯示影像清晰，使其易 以看清。此時之蓋部1 21仍為開啟而光源114亦仍為關灯。 再次於陰天或曰間室内等灰暗環境下，僅以外光量顯 示而外光量為不足時（如在500Lux至5KLux未滿）下，則除取 入外光外而須為補助而將光源11 4點燃。4 68 079 V. Description of the invention (5) The output voltage of the light-receiving element 1 formed by the photodiode used is changed. The characteristic of the light receiving element 1 is that the output voltage starts to increase when the amount of external light exceeds 2 OLux, and the rate of change in voltage before and after the curve slope of lOKLux is the largest, and the calendar will continue to rise to the level of 10OKLux. The light-receiving element 1 may be a photo-crystal, an image sensor, or a solar cell. The LCD panel 100 displays the brightness and contrast of the light-receiving element 1 in response to changes in the output, so that the light source 1 1 is turned on and off, and the opening and closing cover 1 21 is optimally displayed in accordance with the amount of external light. As shown in Figure 3 (a), the four states according to the amount of external light are explained as follows: First, when the environment is too bright under sunny weather (such as 50KLux or more), only the external light collected by the light collecting unit 115 is sufficient. Provide clear display for LCD. Therefore, its cover portion 1 2 1 is turned on, and the light source 114 is turned off to reduce power consumption. The amount of external light taken in was too much, so the voltage applied to the day element electrode 102 was controlled so that the transmittance of the liquid crystal was the lowest (that is, the display was "black") and some light was transmitted. As a result, the LCD will automatically reduce the overall display brightness in an excessively bright environment. At this time, the eyes conform to the surrounding brightness, so it is easier to see the contrast. Thus the LCD will automatically reduce its contrast. Secondly, under normal bright outdoor conditions (such as 5KLux to 5OKLux is not full), the maximum transmittance of the liquid crystal must be increased to increase the display brightness due to the reduction in the amount of external light. At the same time, the contrast must be increased to make the display image clear and easy to use. See clearly. At this time, the cover portion 21 is still on and the light source 114 is still off. Once again in a dark environment such as a cloudy day or an indoor room, when only the amount of external light is displayed and the amount of external light is insufficient (for example, under 500Lux to 5KLux), the light source 11 4 must be supplemented in addition to the external light. ignite.
C:\ProgramFiles\Patent\310664.ptd 第 9 頁 468079 五、發明說明（6) 於夜間屋外等，在黑暗中，外光量極少的環境（500Lux 以下）下，如集光部11 5露出，則由光源1 1 4的對外光漏構成 光量的減低較集光部115取入外光量大，因此須以蓋部121 將集光部115單位，僅用光源114的光進行顯示。故須提高 顯示亮度及射比。 上述4種狀態係為方便於說a月之例子。狀態分類的外 光量狀況不限於此，可對應於附集光機構之LCD特性設定， 其顯示亮度及對比亦可使變化多於2階段，可因應於外光量 作連續變化。亦可亮度就，對比，光源，蓋部1 21等分別於不 同外光量予以變化。 第4圖係表示本發明第2實施形態的附集光機構之LCD 的平面圖及侧剖面圖。與第1實施形態一樣，鄰接於LCD板 100設具有：導光板111;擴散部112;反射部113;光源114及 具集光部115之背光部11 〇。LCD板100及背光部1 10以殼體 120覆罩，LCD板100的顯示領域及集光部115則由殼體120露 出。 其與第1實施形態之不同係在鄰接於背光部110的殼體 120内部設第2受光元件2。該第2之受光元件2與受光元件1 一樣係由光二極體或光電晶體等形成，與LCD板1 00並排設 在背光部110上。第2受光元件2係如第4圖（a)所示，向下設 置，又如第4圖（c)所示，如於LCD板100之玻璃基板104上，在 液晶1 0 7的密封部1 0 8的外侧領域與晝素電極1 0 2及用以驅 動電極之TFT等一起作成。受光元件2的構造（如為光電晶 體時）係與TFT類似的構造，因此與TFT —起製造則可合併其C: \ ProgramFiles \ Patent \ 310664.ptd Page 9 468079 V. Description of the invention (6) At night, etc., in an environment where the amount of external light is very low (under 500 Lux) in the dark, etc., if the light collecting part 11 5 is exposed, then The reduction in the amount of light formed by the external light leak of the light source 1 1 4 is greater than the amount of external light taken in by the light collecting section 115. Therefore, the cover 121 must be used to display the light collecting section 115 by using only the light of the light source 114. Therefore, it is necessary to increase the display brightness and emission ratio. The above 4 states are examples for the convenience of saying a month. The external light quantity status of the status classification is not limited to this. It can correspond to the LCD characteristic setting with a light collection mechanism. The display brightness and contrast can also make the change more than two stages. It can continuously change according to the external light quantity. It is also possible to change the brightness, contrast, light source, cover part 21, etc. for different amounts of external light. Fig. 4 is a plan view and a side sectional view showing an LCD with a light collecting mechanism according to a second embodiment of the present invention. Similar to the first embodiment, adjacent to the LCD panel 100, a light guide plate 111, a diffusion portion 112, a reflection portion 113, a light source 114, and a backlight portion 11 with a light collecting portion 115 are provided. The LCD panel 100 and the backlight portion 110 are covered with a casing 120, and the display area and the light collecting portion 115 of the LCD panel 100 are exposed from the casing 120. The difference from the first embodiment is that a second light receiving element 2 is provided inside the case 120 adjacent to the backlight unit 110. Like the light receiving element 1, the second light receiving element 2 is formed of a photodiode, a photoelectric crystal, or the like, and is arranged on the backlight portion 110 side by side with the LCD panel 100. The second light receiving element 2 is arranged downward as shown in FIG. 4 (a), and as shown in FIG. 4 (c), as shown in the glass substrate 104 of the LCD panel 100, in the sealing portion of the liquid crystal 107 The outer area of 108 is made together with the day element electrode 102 and a TFT for driving the electrode. The structure of the light-receiving element 2 (in the case of a photovoltaic crystal) is similar to that of a TFT, so it can be combined with a TFT to manufacture it.
I11IIM C:\Program Files\Patent\310664.ptd 第 10 頁 468079 五、發明說明（7) 製造工序。 如光源1 14的開（on)關（of f)及蓋部121的開閉其由外 光量直接控制的動作係與第1實形態一樣因應於第1受光元 件1之輸出被控，而如顯示亮度及對比調整等由照射於LCD 板100上的光量控制的動作，則對應於第2受光元件2的輸出 予以控制。其因為顯示亮度及對比係因應於取入外光與光 源1 14所發的内部光之綜合光，即照射在LCd板ι00之光量變 化較能正確控制。以下參照第3圖（b )以5種狀態說明第2實 施形態之附集光機構的動作。 首先於晴天的炎曰下之過於明亮的環境（例如在 5 0KLux以上）時，可僅以集光部115取入的外光充分供LCD做 清晰的顯示，因此於此時，蓋部1 2 1開啟，光源114關熄以減 低消耗電力。其取入的外光量為過多，可控制施加於畫素 電極1 0 2的電壓，使液晶透過率為最低（即顯示"黑亦有若 干光線透過。因此於過分明亮的環境下，LCD將自動降低全 體顯示亮度。又於此時眼睛順應於周圍亮度，因此將對比 降低為較易看清程度。故此時之LCD將自動降低其對比。 其次，於一般晴天之屋外明亮度環境下（例如5KLux至 5 OKLux)，提高液晶最大透過率以提高顯示亮度。同時提高 對比使顯示影像清晰。此時之蓋部121仍為開啟，光源114 亦為關灯狀態。 其次，於陰天或日間在室灰暗環境時，即僅靠外光 量顯示而外光量不足的環境至叮。“時，則取入外 光同時以光源Π 4點灯補助因使用取入外光與光源114I11IIM C: \ Program Files \ Patent \ 310664.ptd Page 10 468079 V. Description of the invention (7) Manufacturing process. If the light source 114 is turned on (of f) and the cover 121 is turned on and off, the action directly controlled by the amount of external light is the same as that of the first real form, which is controlled according to the output of the first light receiving element 1, and as shown in the display Operations such as brightness and contrast adjustment, which are controlled by the amount of light irradiated on the LCD panel 100, are controlled in accordance with the output of the second light receiving element 2. The reason is that the display brightness and contrast are properly controlled by taking in the combined light of the external light and the internal light emitted from the light source 114, that is, the change in the amount of light irradiated to the LCd panel 00. The operation of the light collecting mechanism of the second embodiment will be described with reference to Fig. 3 (b) in five states. First, when the environment is too bright under a sunny day (for example, above 50KLux), only the external light received by the light collecting unit 115 can be used for the LCD to display clearly. Therefore, at this time, the cover 1 2 1 is turned on and the light source 114 is turned off to reduce power consumption. The amount of external light taken in is too large, and the voltage applied to the pixel electrode 102 can be controlled to minimize the liquid crystal transmittance (that is, the display " black also has some light transmitted. Therefore, in an excessively bright environment, the LCD will Automatically reduce the overall display brightness. At this time, the eyes conform to the surrounding brightness, so the contrast is reduced to a level that is easier to see. Therefore, the LCD will automatically reduce its contrast at this time. Secondly, under normal bright outdoor environment (such as 5KLux to 5 OKLux), increase the maximum transmittance of the liquid crystal to increase the display brightness. At the same time, increase the contrast to make the display image clear. At this time, the cover 121 is still on, and the light source 114 is also off. Second, in cloudy or daytime When the room is in a dark environment, that is, the environment where only the amount of external light is displayed but the amount of external light is insufficient. "", Then the external light is taken in and the light source Π 4 lighting subsidy is used to take in the external light and light source 114
C:\ProgramFiles\Patent\310664.ptd 第 11 頁 4 6 8 07 9 五、發明說明（8) 的光量實行顯不，該綜合光量較於黑暗環境中僅靠光源114 的光量時為多，因而須再度降低顯示亮度及對比β 再次’如夜間於室内點灯的較暗環境 以下）下，須再度將亮度及對比提高。 若於夜間屋外，極為黑暗，而外光量極少的.環境 ( 500LuX以下）下，其露出集光部115可取入之外光較由光源 114的外漏構成之光量減低為大，因此須以蓋部121將遮罩 集光部115住，僅以光源114的光進行顯示，因僅用光源114 的光顯示，故須提高顯示亮度及對比。 於本實施形態中，可受光元件1測定外光若其對應之 受光元件1輸出超過一預定值時，關閉蓋部121，若亦超越另 一預定值時則可將光源1 1 4關熄。然後由受光元件2測定照 射於LC D板1 〇 〇的照射光量，亦即測定外光與内部光的合計 光量，若對應於其測定結果之受光元件2的輸出超越一預定 值時，可調整對比及顯示亮度。 如上述，使用受光元件2控制對比及顯示亮度能實行較 精細，較正確的控制。 通常光源114及集光部115附近之光量較多，而甲央部 分的光量則較少。又於光源11 4關熄時，集光部1 1 5附近較 亮’而於光源114附近為較暗。反之若將集光部115的蓋部 121關閉，僅以光源114顯示時，則光源114附近較亮，而於集 光部115附近最暗》因此第2受光元件2的配置位置，係以如 第4圖（b)所示配置在光源114與集光部115中間為宜。 LC D板1 〇 〇多使用多晶矽的多結晶半導體的薄膜電晶C: \ ProgramFiles \ Patent \ 310664.ptd Page 11 4 6 8 07 9 V. Description of the invention (8) The amount of light implemented is significantly greater than the total amount of light in a dark environment when only the light source 114 is used, so It is necessary to lower the display brightness and contrast β again, such as under the dark environment of indoor lighting at night), and increase the brightness and contrast again. If it is extremely dark outside the house at night, and the amount of external light is very small. Under the environment (below 500LuX), the exposed light collection part 115 can take in more external light than the amount of light formed by the leakage of the light source 114. The part 121 holds the mask light collecting part 115 and displays only with the light of the light source 114. Since only the light of the light source 114 is used for display, it is necessary to increase the display brightness and contrast. In this embodiment, the light-receiving element 1 can measure external light. If the corresponding light-receiving element 1 output exceeds a predetermined value, the cover 121 is closed, and if it exceeds another predetermined value, the light source 1 4 can be turned off. Then, the light receiving element 2 measures the amount of irradiated light on the LCD panel 100, that is, the total light amount of the external light and the internal light is measured. If the output of the light receiving element 2 corresponding to the measurement result exceeds a predetermined value, it can be adjusted Contrast and display brightness. As described above, the use of the light receiving element 2 to control the contrast and display brightness enables finer and more accurate control. Normally, the amount of light in the vicinity of the light source 114 and the light collecting portion 115 is large, while the amount of light in the central portion is small. When the light source 114 is turned off, it is brighter near the light-collecting part 1 15 and darker near the light source 114. Conversely, if the cover 121 of the light collecting unit 115 is closed and displayed only by the light source 114, the light source 114 is brighter near the light source 114 and the darkest is near the light collecting unit 115. Therefore, the position of the second light receiving element 2 is as follows As shown in FIG. 4 (b), it is preferable to be arranged between the light source 114 and the light collection unit 115. LC D-Boards １０〇 Many thin-film transistors using polycrystalline silicon
C:\Program Files\Patent\310664.ptd 第 12 頁 468 079 五、發明說明（9) 體，而以採用顯示畫素部分與其周邊驅動電路為一體形成 於同一基板上之驅動電路内裝型為宜。如此，則不必外附 驅動電路1C，顯示畫面周圍的框緣部得以縮小，更能達成其 小，化及輕量化，以獲得最適合於攜帶用的LCJ) ^此時可 將欠光疋件1、2與驅動電路於同一基板上一體化。 一其次舉例說明為實現上述動作的具體電路。第5圖係 表示於本發明之第1實施形態的使用附集光機構LCD的控制 電路方塊圖。如圖，包括：處理自外部接受外部訊號的訊號 處理電路11;輪入於訊號處理電路u處理的影像訊號以使 對比為最適當之對比調整電路12;輸入經由對比調整後的 影像訊號，使其顯示亮度為最適當的亮度調整電路13;輸入 經調整顯示亮度的影像訊號因應以控制施加在晝素電極 102以進行畫面顯示的發出内部光的光源114;接 受外光的受光元件1 ;電位調整電路丨4;第1判定電路15;第2 判定電路1 6 ;第3判定電路1 7 ;第4判定電路1 8 ;用以覆蓋集 光部的蓋部121，以及用以驅動蓋部121的蓋部驅動裝置 20。其中LCD板1〇〇,光源114，蓋部121及受光元件1係對應 於第1圖所示者。 光二極體的受光元件1對應於外光量產生如第2圖所示 的輸出電壓。輸出電壓則由所用元件規格，其最大電壓值 不同。例如，於本實施形態使用之受光元件1的輸出電壓， 在100KLUX時之最大輸出為74 (約0.1V)。電位調整電路14 係將受光元件1之輸出電變換為最適合於論理電路的電壓 值，例如變換為最大值5V之類比訊號電壓做為外光量訊號C: \ Program Files \ Patent \ 310664.ptd Page 12 468 079 V. Description of the invention (9), and the driving circuit built-in type that uses the display pixel part and its peripheral driving circuit as a whole is formed on the same substrate as should. In this way, there is no need to attach the driving circuit 1C, and the frame edge portion around the display screen can be reduced, and its size, size, and weight can be reduced to obtain the most suitable LCJ for carrying. 1, 2 and the driving circuit are integrated on the same substrate. The second is an example of a specific circuit for realizing the above operation. Fig. 5 is a block diagram of a control circuit using an LCD with a light collecting mechanism according to the first embodiment of the present invention. As shown in the figure, it includes: a signal processing circuit 11 that processes external signals received from the outside; an image signal processed by the signal processing circuit u to make the contrast the most appropriate contrast adjustment circuit 12; input the image signal adjusted by the contrast so that Its display brightness is the most appropriate brightness adjustment circuit 13; the input image signal with adjusted display brightness is controlled to control the light source 114 that emits internal light applied to the day element electrode 102 for screen display; the light receiving element 1 that receives external light; potential Adjustment circuit 4; first determination circuit 15; second determination circuit 16; third determination circuit 17; fourth determination circuit 18; cover portion 121 for covering the light collecting portion; and a cover portion 121 for driving的 盖 部 驱动 装置 20。 The cover driving device 20. The LCD panel 100, the light source 114, the cover 121, and the light receiving element 1 correspond to those shown in FIG. The light-receiving element 1 of the photodiode generates an output voltage as shown in Fig. 2 in accordance with the amount of external light. The output voltage depends on the specifications of the components used, and its maximum voltage value varies. For example, the output voltage of the light receiving element 1 used in this embodiment has a maximum output of 74 (about 0.1 V) at 100 KLUX. The potential adjustment circuit 14 converts the output of the light receiving element 1 into a voltage value most suitable for a theoretical circuit, for example, it converts to an analog signal voltage with a maximum value of 5V as an external light amount signal.
C:\ProgramFiles\Patent\310664.ptd 第 13 頁 6 8 07 9 五、發明說明（10) =輸，《亦即於本實施形態中，電位調整路14係將輸入電 壓以線性變成5/\倍之動作放大器。 外光I訊號分別輸於第1至第4判定電路 15’16, 17, 18。各判定電路係將由電位調整電路"獲得之 外光量訊號分別與輸入之參考電壓跄以比較於外光量訊 號超過時，刀別由第1判定電路15向對比調整電路a，第2判 定電路16向亮度調整電路13，第3判定電路17向光源114的 點灯開關，而由第4判定電路18向蓋部驅動裝置2〇輸出。C: \ ProgramFiles \ Patent \ 310664.ptd Page 13 6 8 07 9 V. Explanation of the invention (10) = Lost, that is, in this embodiment, the potential adjustment circuit 14 changes the input voltage linearly to 5 / \ Times the action amplifier. The external light I signals are input to the first to fourth decision circuits 15'16, 17, 18, respectively. Each judgment circuit compares the external light quantity signal obtained by the potential adjustment circuit with the input reference voltage to compare with when the external light quantity signal exceeds, the first judgment circuit 15 goes to the comparison adjustment circuit a, and the second judgment circuit 16 To the brightness adjustment circuit 13, the third determination circuit 17 is turned on and off by the light source 114, and the fourth determination circuit 18 is output to the cover driving device 20.
首先，說明顯示亮度的調整動作^判定電路1 6係將使 變化顯示亮度的外光量（於本實施形態為5KLux)時之受光 元件輸出電壓Va施以電位調整的電壓5 χν3/\做為參考電 麗VrefI輪入。而判定電路16係於外光量訊號超過Vrefi時將亮 度調整訊號BC輸至亮度調整電路13 «亮度調整電路13則對 應於壳度調整訊號BC將輸於LCD板的影像訊號移位以降低 其顯示亮度D 第6圖係亮度調整電路13的具體電路例。於亮度調整 電路13中，含有電容器31，電晶體32，電源33及電阻34。影 像訊號輸於電容器31,依輸入電壓使電晶體32之通道的導 通狀態變化，因應上述變化使由電源3 3流出的電流變化，將 其輸出。亮度調整電路13具有：依箝位（clamp)訊號CLP開 閉之開關35;依亮度調整訊號BC切換的開關36;輸出第1電 壓的定電壓源37,及輸出較第1電壓為高之第2電源的第2之 定電壓源38。箝位訊號CLP係於水平遮沒（blanking)期間 中輸出，而且在此期間開關3 5為導通。開關3 6係對應於亮First, the adjustment operation of the display brightness will be described. The determination circuit 16 will apply the potential adjustment voltage 5 χν3 / \ to the output voltage Va of the light receiving element when the amount of external light (5KLux in this embodiment) is changed to change the display brightness. Denali VrefI turns in. The judging circuit 16 outputs the brightness adjustment signal BC to the brightness adjustment circuit 13 when the external light signal exceeds Vrefi. «The brightness adjustment circuit 13 corresponds to the case adjustment signal BC and shifts the image signal input to the LCD panel to reduce its display. Brightness D FIG. 6 is a specific circuit example of the brightness adjustment circuit 13. The brightness adjustment circuit 13 includes a capacitor 31, a transistor 32, a power source 33, and a resistor 34. The image signal is input to the capacitor 31, and the conduction state of the channel of the transistor 32 is changed according to the input voltage. The current flowing from the power source 33 is changed in accordance with the above-mentioned change, and it is output. The brightness adjustment circuit 13 has: a switch 35 that is opened and closed by the clamp signal CLP; a switch 36 that is switched by the brightness adjustment signal BC; a constant voltage source 37 that outputs a first voltage; and a second output that is higher than the first voltage The second constant voltage source 38 of the power supply. The clamp signal CLP is output during the horizontal blanking period, and the switches 35 are turned on during this period. Switches 3 to 6 correspond to light
Μ C:\Program Files\Patent\310664.ptd 第 14 頁 468079 五、發明說明（11) 度调整訊號BC切換於 沒期間將其中2 =第2定電壓源37,38間，於水平遮 益2位準為決定施加於畫素電極與共通電極之電壓 π π it ί的電壓值。以下設連接於第1定電壓源時的箝 '‘·'、第1籍位位準VCLP1，而將連接於第2定電壓源時的 箝位位準稱為第2箝位位準v 。 CLP2 7圖為表不於本發明附集光機構之LCD的畫素電極與 厂通電極—間施加電麗k與液晶之透過率T的關係。第7圖 a)係表示於施加電壓為〇v時透過率為最大時的正常白模 式（normal white mode)狀態，第7圖（b)表示施加電壓為〇v 時透過率為最小時的正常黑模式狀態。首先說明正常白的 狀態。在周圍黑暗而外光量訊號不超過參考電壓時由 開關36連接，第1定電壓源37，成第i箝位位準^…。電壓& 係以VR 1的範圍施加。VR丨的最低值係由第i箝位位準％⑴決 定。此時，液晶透過率係於Tfil的範園變化。若外光量增 加，亮度調整訊號BC輸出時，在亮度調整電路丨3切換於較高 的電壓源38，箝位位準變高為\^2。唯因施加電壓心的變幅 不變，電壓VLC則移位於VR2範圍。由此，使液晶的透過率切 換為TR 2的變化範圍，故全體透過率將移位於較低範圍。因 此’可降低LCD的顯示亮度。若於正常黑的狀態，則於開關 36的開閉動作做相反的設定，則如第7圖（b)所示，在外光量 少時以VR1施加電壓VLC，當外光量超過預定值時，降低箝位 位準，將施加之電壓範圍由VR1移於VR2以使顯示亮度降 低。Μ C: \ Program Files \ Patent \ 310664.ptd Page 14 468079 V. Description of the invention (11) The degree adjustment signal BC is switched during the period of time, which will be 2 = 2nd constant voltage source 37, 38, in the horizontal cover 2 The level is a voltage value that determines the voltage π π it ί applied to the pixel electrode and the common electrode. In the following, the clamp '' · when connected to the first constant voltage source and the first level VCLP1 are set, and the clamp level when connected to the second constant voltage source is referred to as the second clamp level v. CLP2 7 shows the relationship between the pixel electrode and the factory electrode of the LCD with a light-collecting mechanism according to the present invention, and the relationship between the applied electrical k and the transmittance T of the liquid crystal. Fig. 7a) shows a normal white mode state where the transmittance is maximum when the applied voltage is 0v, and Fig. 7 (b) shows a normal state when the transmittance is minimum when the applied voltage is 0v. Black mode status. The normal white state will be explained first. When the surroundings are dark and the external light signal does not exceed the reference voltage, it is connected by the switch 36, and the first constant voltage source 37 becomes the i-th clamp level ^ .... The voltage & is applied in the range of VR 1. The lowest value of VR 丨 is determined by the i-th clamp level% ⑴. At this time, the transmittance of the liquid crystal is changed in the range of Tfil. If the amount of external light increases, when the brightness adjustment signal BC is output, the brightness adjustment circuit 3 is switched to a higher voltage source 38, and the clamping level becomes higher than \ ^ 2. Because the amplitude of the applied voltage center does not change, the voltage VLC is shifted to the VR2 range. As a result, the transmittance of the liquid crystal is switched to the variation range of TR 2, so that the overall transmittance is shifted to a lower range. Therefore, the display brightness of the LCD can be reduced. If it is in the normally black state, the opposite setting is made for the opening and closing action of the switch 36. As shown in FIG. 7 (b), when the amount of external light is small, the voltage VLC is applied by VR1. When the amount of external light exceeds a predetermined value, it is reduced. Clamp the level and move the applied voltage range from VR1 to VR2 to reduce the display brightness.
C:\Program FilesVPatent\310664.ptdC: \ Program FilesVPatent \ 310664.ptd
4 S B 07 9 五、發明說明（12) 其次，說明對比調整動作。判定電路1 5係將使變化對 比的外光量（於本實施形態為5KLux)時之受光元件輸出電 壓¥3’施以電位調整的電壓（5\¥3’/¥4)做為參考電壓¥^1輸 入。於本實施形態中，因V3’相等於變化亮度的輸出電壓v3, 故以下以V3記之。判定電路1 5於外光量訊號超過Vref2 (相等 於Vrefl)時將對比調整訊號CC輸於對比調整電路12。對比調 整電路12係對應於對比調整訊號CC將輸至LCD板之影像訊 號波幅縮小以降低其對比。 第8圖（a)為表示對比調整電路的具體電路例。對比調 整電路具有動作放大器41;具有施加負回授電阻值R1的電 阻4 2，電阻值R2之電阻4 3及44,及由對比調整訊號CC而切換 的開關45。當輸入對比調整訊號CC使開關45連接時，電阻 43與電阻44成並聯，故動作放大器的放大率降低。第8圖 (b)所示電路亦具同樣動作功能。 第9圖係表示本發明附集光機構之LCD驅動方法之施加 電壓VLC與透過率T的關係。第9圖（a)表示於正常白模式狀 態，而於第9圖（b)表示正常黑模式狀態。首先，說明正常白 的狀態。在周圍黑暗，外光量訊號不超過參考電壓Vrefl時， 開關45為開啟，動作放大器41以第1放大率動作。此時的電 壓VLC係以VR1的範圍施加，而液晶透過率則變化於TR1的範 圍。若外光量增加，而輸出對比調整訊號CC時，對比調整電 路12的開關45為導通以降低動作放大器41的放大率。因 而，使電壓VLC施加之變動幅度縮小。又因箝位位準不變，電 壓VLC將縮小於VR3的範圍。由此使液晶的透過率切換為TR34 S B 07 9 V. Explanation of the invention (12) Next, the contrast adjustment operation will be described. The determination circuit 1 5 uses the output voltage ¥ 3 'of the light receiving element when the amount of contrasting external light (5KLux in this embodiment) is compared and applies a potential-adjusted voltage (5 \ ¥ 3' / ¥ 4) as the reference voltage ¥ ^ 1 input. In this embodiment, since V3 'is equal to the output voltage v3 with varying brightness, it is hereinafter referred to as V3. The judgment circuit 15 outputs the contrast adjustment signal CC to the contrast adjustment circuit 12 when the external light signal exceeds Vref2 (equivalent to Vrefl). The contrast adjustment circuit 12 corresponds to the contrast adjustment signal CC which reduces the amplitude of the image signal input to the LCD panel to reduce its contrast. Fig. 8 (a) is a specific circuit example showing a contrast adjustment circuit. The contrast adjustment circuit has an action amplifier 41, a resistance 4 2 to which a negative feedback resistance value R1 is applied, resistances R 3 and 44 of a resistance value R2, and a switch 45 which is switched by the contrast adjustment signal CC. When the input contrast adjustment signal CC connects the switch 45, the resistor 43 and the resistor 44 are connected in parallel, so the amplification of the action amplifier is reduced. The circuit shown in Figure 8 (b) has the same function. Fig. 9 shows the relationship between the applied voltage VLC and the transmittance T of the LCD driving method with a light collecting mechanism according to the present invention. Fig. 9 (a) shows the normal white mode state, and Fig. 9 (b) shows the normal black mode state. First, the state of normal white will be described. When the surroundings are dark and the amount of external light signal does not exceed the reference voltage Vrefl, the switch 45 is turned on, and the action amplifier 41 operates at the first amplification factor. At this time, the voltage VLC is applied in the range of VR1, and the liquid crystal transmittance is changed in the range of TR1. If the amount of external light increases and the contrast adjustment signal CC is output, the switch 45 of the contrast adjustment circuit 12 is turned on to reduce the amplification of the action amplifier 41. Therefore, the fluctuation range of the voltage VLC applied is reduced. Because the clamp level is unchanged, the voltage VLC will be reduced to the range of VR3. As a result, the transmittance of the liquid crystal is switched to TR3
C:\Program Files\Patent\310664.ptd 第 16 頁 〇 Β 07 9 五、發明說明（13) -- 的範圍變化，可透過率的變動範圍縮小。因而使“^的對比 得以降低。若於正常黑狀態，則如第9圖（b)所示，外光量少 時，以VR1施加電壓VLC，當外光量超過預定值時，將電壓施加 範圍由VR1縮小為VR3以減低其對比。 其次參照第5圖說明光源11 4之點灯關灯及蓋部1 2 1的 開閉動作。於判定電路1 7中，將使光源實行點灯關灯切換 的外光量（於本實施形態為5KLux)時之受光元件1輸出電壓 V!予以位準調整為電壓5 XV〗/V4以參考電壓Vref3輪入。判定 電路1 7則於外光量訊號超過Vref3時將關光源114的開關訊號 SW向光源114的電源1 9輸出。電源1 9係對應於開關訊號s 對光源11 4停止電壓供給以使光源11 4關灯。又於判定電路 18，將使蓋部121開關切換的外光量（本實施形態為5 〇〇Lux) 時之受光元件1輸出電壓V。予以位準調整為電壓5 xv。/V4以 參考電壓Vref4輸入。判定電路1 8係於外光量訊號超過vref4時 輸出蓋部開閉訊號0C於蓋部驅動裝置20。而蓋部驅動裝置 2 0則對應於開閉訊號〇c將蓋部1 2 1開啟以使集光部1 1 5露 出。 又於第5圖中，可將第1判定電路15與第2判定電路16為 共用，以使亮度調整訊號BC與對比調整訊號CC為共通以簡 化電路構成〇 第10圖係表示本發明第1實施形態的附集光機構LCD的 控制電路方塊圖。具有：訊號處理電路11;直線對比調整電 路61;直線亮度調整電路62; LCD板100;光源114;受光元件 1;電位調整電路14;判定電路17;判定電路18;蓋部121及蓋C: \ Program Files \ Patent \ 310664.ptd Page 16 〇 B 07 9 V. Description of the invention (13)-The range of the change in transmittance decreases. Therefore, the contrast of "^" can be reduced. In the normal black state, as shown in Figure 9 (b), when the amount of external light is small, the voltage VLC is applied with VR1, and when the amount of external light exceeds a predetermined value, the voltage is applied in the range Shrink from VR1 to VR3 to reduce the contrast. Secondly, referring to FIG. 5, the lighting operation of the light source 11 4 and the opening and closing operation of the cover 1 2 1 will be described. In the determination circuit 17, the light source will be switched on and off. The output voltage V of the light receiving element 1 when the amount of external light (in this embodiment is 5KLux) is adjusted to a voltage of 5 XV〗 / V4 turns in with the reference voltage Vref3. The judgment circuit 17 is when the external light signal exceeds Vref3 The switch signal SW of the light source 114 is turned off to the power source 19 of the light source 114. The power source 19 corresponds to the switch signal s to stop the voltage supply to the light source 114 so that the light source 11 is turned off. In addition, in the determination circuit 18, the cover is turned on. The output voltage V of the light receiving element 1 when the amount of external light (switched to 500 lux in this embodiment) is switched by the unit 121. The level is adjusted to a voltage of 5 xv. / V4 is input with the reference voltage Vref4. The judgment circuit 1 8 is external When the light quantity signal exceeds vref4, the output cover opening and closing signal is 0C at The cover driving device 20. The cover driving device 20 corresponds to the opening / closing signal 0c, and the cover 1 2 1 is opened so that the light collecting portion 1 1 5 is exposed. Also in FIG. 5, the first determination circuit can be 15 is shared with the second determination circuit 16 so that the brightness adjustment signal BC and the contrast adjustment signal CC are common to simplify the circuit configuration. FIG. 10 is a block diagram of a control circuit of the LCD with a light collecting mechanism according to the first embodiment of the present invention. .Has: signal processing circuit 11; linear contrast adjustment circuit 61; linear brightness adjustment circuit 62; LCD panel 100; light source 114; light receiving element 1; potential adjustment circuit 14; determination circuit 17; determination circuit 18; cover 121 and cover
C:\ProgramFiles\Patent\310664_ptd 第 17 頁 4 6 8 079 五、發明說明（14) ~~---- =驅動裝置20。其中，lCD板1〇〇,背光部114，蓋部121及受 光元件1為對應於第1圖所示者。 其與第5圖的電路不同處係在於直線對比調整電路61 直線冗度調整電路62對應於受光元件！的輸出，做直線動 作者。 直線對比調整電路61係如第π圖所示的電路構成，具 有電壓控制放大器46。於電壓控制放大器46輸入控制’電 壓，係對應於控制電壓變動其放大率的放大器。於本實施 形態中，控制電壓係將受光元件！之輪出予以直線放大而 得。由此，影像訊號係對應於受光元件丨的輸出，以線性變 動其放大率，故施加於畫素電極之電壓範圍的電壓變動予 以對應，因此可如第8圖之對比調整電路12說明，同樣原理 變動其對比。 .直線亮度調整電路6 2係如第12圖所示的電路構成，將 受光元件1之輸出予以線性放大以箝位位準變動。變動箝 位位準可使施加於晝素電極之電壓的電壓範圍移位可由 第6圖之亮度調整電路13之說明同樣原理使顯示亮度變 動。 有關光源114的點灯關灯及蓋部12ι的開閉動作係與第 5圖所示電路相同。 第13圖為表示本發明第1實施形態的附集光機構LCI)m 輸入數位影像數據時之數據控制電路的方塊圖。具有數據 訊號處理電路91; D/A變換器92;乘法器93;加減法器94; A/D 變換器95，以及判定電路96。C: \ ProgramFiles \ Patent \ 310664_ptd Page 17 4 6 8 079 V. Description of the invention (14) ~~ ---- = drive device 20. Among them, the CD board 100, the backlight portion 114, the cover portion 121, and the light receiving element 1 correspond to those shown in Fig. 1. It differs from the circuit in FIG. 5 in that the linear contrast adjustment circuit 61 and the linear redundancy adjustment circuit 62 correspond to a light receiving element! The output is done in linear motion by the author. The linear contrast adjustment circuit 61 has a circuit configuration as shown in Fig. Π and includes a voltage control amplifier 46. The control voltage is input to the voltage control amplifier 46, and is an amplifier whose amplification factor is changed according to the control voltage. In this embodiment, the control voltage is the light receiving element! The wheel out is obtained by linear amplification. Therefore, the image signal corresponds to the output of the light-receiving element, and its magnification is changed linearly, so the voltage fluctuation of the voltage range applied to the pixel electrode is corresponding. Therefore, it can be explained as the comparison adjustment circuit 12 in FIG. 8. The principle changes its contrast. The linear brightness adjustment circuit 62 is a circuit structure as shown in Fig. 12, which linearly amplifies the output of the light receiving element 1 to change the clamp level. Changing the clamp level can shift the voltage range of the voltage applied to the day element. The display brightness can be changed by the same principle as explained by the brightness adjustment circuit 13 in FIG. 6. The operation of turning on / off the light source 114 and opening / closing the cover 12m is the same as the circuit shown in FIG. FIG. 13 is a block diagram showing a data control circuit when the digital image data is input to the integrated light collecting mechanism (LCI) m according to the first embodiment of the present invention. It has a data signal processing circuit 91; a D / A converter 92; a multiplier 93; an adder-subtractor 94; an A / D converter 95; and a decision circuit 96.
C:\ProgramFiles\Patent\310664.ptd 第 18 頁 4 68 079 五、發明說明（15) 數位輸入數據訊號供給於乘法器93 〇 —方面將受光元 件1之輸出於A/D變換器95變換為數位數據，做為外光量數 據供於判定電路96。於判定電路96中記憶有4個預定值可 將該預定值與外光量數據比較。 ’ 由判定電路96比較外光量是否較第1預定值為多或少 以判定是否切換LCD板1〇〇的對比，將二進位數據的對比變 更訊號CC輸於乘法器93。如外光量不足時，對比變更訊號 CC為「1」，而於外光量充足時則為「〇」。若(；(：為「〇 時，則於乘法器9 3將數位影像數據乘預定值以切^ 〇 D板 1 0 0的對比。 又於判定電路96比較外光量是否較第2預定值為多或 少以判定是否切換L C D板1 0 0的顯示亮度將二進位數”據的亮 度變更訊號BC輸至加減法器94。如外光量不足時，亮度變' 更訊號BC為「1」，而於外光量充分時則為「〇」。若bc為 「〇」時，則於加減法器94將數位影像數據加預定值以切換 LCD板100的顯示亮度。 如上述切換對比與顯示亮度的數據訊號係於數位訊號 處理電路91實行預定的訊號處理，介由d/a變換器92供於 LCD板100 ° 、 、 又於判定電路96比較外光量是否較第3預定值為多或 少以使光源1 14切換為點灯關灯之開關訊號⑽輸出。由光 源114接受開關訊號SW於外光量不足時，將光源114點灯，而 於外光量充足時，將其關灯。 又於判定電路96比較外光量是否比較第4預定值為多C: \ ProgramFiles \ Patent \ 310664.ptd Page 18 4 68 079 V. Description of the invention (15) The digital input data signal is supplied to the multiplier 93 〇—The output of the light receiving element 1 is converted by the A / D converter 95 into The digital data is supplied to the determination circuit 96 as external light amount data. There are four predetermined values stored in the determination circuit 96, and the predetermined values can be compared with the external light amount data. The judgment circuit 96 compares whether the amount of external light is more or less than the first predetermined value to determine whether to switch the contrast of the LCD panel 100, and outputs the contrast change signal CC of the binary data to the multiplier 93. If the amount of external light is insufficient, the contrast change signal CC is "1", and when the amount of external light is sufficient, it is "0". If (; (: is "0," the multiplier 93 multiplies the digital image data by a predetermined value to cut the contrast of the ^ 〇 D plate 1 0 0.) The determination circuit 96 compares whether the amount of external light is greater than the second predetermined value. More or less, to determine whether to switch the display brightness of the LCD panel 1 0 0, the brightness change signal BC of the binary number is input to the adder-subtractor 94. If the amount of external light is insufficient, the brightness will change to '1', and the signal BC will be "1". When the amount of external light is sufficient, it is "0". If bc is "0", the digital image data is added to the predetermined value by the adder-subtractor 94 to switch the display brightness of the LCD panel 100. As described above, the contrast and display brightness are switched. The data signal is subjected to predetermined signal processing by the digital signal processing circuit 91. The d / a converter 92 is provided to the LCD panel 100 °, and the determination circuit 96 compares whether the amount of external light is more or less than the third predetermined value. The light source 114 is switched to the switching signal ⑽ output of turning on and turning off the light. The switching signal SW is received by the light source 114 when the amount of external light is insufficient, and the light source 114 is turned on, and when the amount of external light is sufficient, it is turned off. The circuit 96 compares whether the amount of external light is larger than the fourth predetermined value
C:\ProgramFiles\Patent\310664.ptd 第 19 頁 468079 五、發明說明（16) 或少以使蓋部1 2 1切換為開啟或關閉之開關訊號〇(：輸出。 由蓋部1 21接開閉訊號0C於外光量不足時將開關關閉，而於 外光量充足時將其開啟。 第14圖為表示本發明第1實施形態的附集光機構之lcd 於輸入數位影像數據時之數位控制電路方塊圖。其與第13 圖之數位控制電路不同處係在於A/D變換器95之輪出為供 於判定電路96，同時，亦直接供於乘法器93及加減法器94 者。乘法器9 3,加減法器94分別以對應外光量數據的值乘 或加減於數位影像數據。由此可將LCD板1〇〇之對比及顯示 亮度，略對應於外光量成線性調整β 其於光源114及蓋部121之控制係與第13圖的電路相 同。另於A/D變換器95與乘法器93間設倍率電路，對A/D變 換器95由變換器輸出之波幅予以放大預定倍做對比調整數 據亦可。 第15圖為表示本發明第2實施形態的附集光機構LCD的 控制電路方塊圖。該電路具備：訊號處理電路11;對比調整 電路12;亮度調整電路13; LCD板100;光源114,接受外光的 受光元件1;接受由集光部取入的光及由光源114發出的内 部光之受光元件2 ;電位調整電路14、53 ;第1判定電路51 ; 第2判定電路52;第3判定電路17 ;第4判定電路18 ;用以覆蓋 集光部的蓋部121以及用以驅動蓋部121的蓋部驅動裝置 20。其中，LCD板100、背光部114、蓋部121及受光元件1、 2係分別對應於第4圖所示者。又於第5圖之控制電路同樣 構成係註以相同符號省略其說明。C: \ ProgramFiles \ Patent \ 310664.ptd Page 19 468079 V. Description of the invention (16) Switch signal to switch the cover 1 2 1 to open or close at least 0 (: output. Opening and closing by cover 1 21 The signal 0C turns off the switch when the amount of external light is insufficient, and turns it on when the amount of external light is sufficient. Fig. 14 is a block diagram of a digital control circuit when an LCD with a light collecting mechanism according to the first embodiment of the present invention is inputting digital image data. Figure. The difference from the digital control circuit in Figure 13 is that the output of the A / D converter 95 is provided to the decision circuit 96, and it is also directly supplied to the multiplier 93 and the adder-subtractor 94. Multiplier 9 3. The adder-subtractor 94 multiplies or adds or subtracts the digital image data by the value corresponding to the amount of external light data. From this, the contrast and display brightness of the LCD panel 100 can be slightly adjusted linearly to correspond to the amount of external light. The control system of the cover 121 is the same as the circuit in Fig. 13. In addition, a magnification circuit is provided between the A / D converter 95 and the multiplier 93, and the amplitude of the output of the A / D converter 95 from the converter is amplified by a predetermined multiple. The adjustment data can also be compared. Figure 15 shows the present invention. 2 is a block diagram of a control circuit of an LCD with a light collecting mechanism according to the embodiment. The circuit includes: a signal processing circuit 11; a contrast adjustment circuit 12; a brightness adjustment circuit 13; an LCD panel 100; a light source 114; a light receiving element 1 for receiving external light; Light receiving element 2 for light taken in by the light collecting section and internal light emitted from the light source 114; potential adjustment circuits 14, 53; first determination circuit 51; second determination circuit 52; third determination circuit 17; fourth determination circuit 18; a cover part 121 for covering the light collecting part and a cover part driving device 20 for driving the cover part 121. Among them, the LCD panel 100, the backlight part 114, the cover part 121, and the light receiving elements 1, 2 respectively correspond to the first It is shown in Fig. 4. The same structure of the control circuit in Fig. 5 is denoted by the same reference numerals and its description is omitted.
C:\ProgramFiles\PatentA310664.ptd 第 20 頁 468 079 五、發明說明（17) 第2受光元件2係接受由集光部取入的光及由光源114 發出的内部光，而輸出其合計照射光量的電壓。電位調整 電路5 3則將其變換為最大5V程度做照射光量訊號予以輸 出。 第1判定電路5 1係將照射光量訊號與參考電壓Vref5比 較，於超過時，輸出對比調整訊號“。參考電壓被設定 為5卜部光與内部光的合計光量超過預定值時輸出對比調整 訊號CC。對比調整電路12係與第5圖的電路一樣，接受對比 調整訊號CC調整對比。 第2判定電路5 2係將照射光量訊號與基準電壓Vfef6比 較，超過時輸出亮度調整訊號Bc。於本實施形態中參考電 壓Vrefs與參考電壓vrefe係相同值。亮度調整電路丨3係如第5 圖一樣，接受亮度調整訊號BC調整亮度。 第16圖為表示係用於本發明第2實施形態的附集光機 構LCD的控制電路方塊圖。其與第15圖電路之不同處係在 於直線對比調整電路61與直線亮度調整電路62係對應於受 光元件1的輸出作線性動作者。直線對比調整電路6 i與直 線亮度調整電路62係與第1〇圖所示之直線對比調整電路η 與直線亮度調整電路62同樣構成，直接輸入第2受光元件2 的輸出，與第10圖一樣，可將對比及亮度予以線性控制。 如上述，本發明係對應於外光量自動實行光源1丨4的點 灯/關灯切換，並控制LCD板1 0 0的對比及顯示亮度，於外光 較少的環境下自動將光源114點灯，並提高LCD板100的對比 與顯示亮度。因此，於照光部（背光部）丨丨〇的照明度低降時C: \ ProgramFiles \ PatentA310664.ptd Page 20 468 079 V. Description of the invention (17) The second light receiving element 2 receives the light received by the light collection unit and the internal light emitted by the light source 114, and outputs the total amount of irradiation light The voltage. The potential adjustment circuit 53 converts it to a maximum level of 5V and outputs it as a signal of the amount of irradiation light. The first determination circuit 51 compares the irradiation light signal with the reference voltage Vref5, and outputs a contrast adjustment signal when it exceeds the reference voltage. The reference voltage is set to 5 when the total light quantity of the internal light and the internal light exceeds a predetermined value. The contrast adjustment signal CC is output. The comparison adjustment circuit 12 is the same as the circuit in FIG. 5 and accepts the comparison adjustment signal CC to adjust the comparison. The second determination circuit 5 2 compares the irradiation light signal with the reference voltage Vfef6 and outputs a brightness adjustment signal Bc when it exceeds. In this implementation In the form, the reference voltage Vrefs and the reference voltage vrefe are the same value. The brightness adjustment circuit 3 is the same as that shown in FIG. 5 and receives the brightness adjustment signal BC to adjust the brightness. FIG. 16 shows an additional set used in the second embodiment of the present invention. Block diagram of the control circuit of the optical mechanism LCD. The difference from the circuit of Fig. 15 lies in the linear contrast adjustment circuit 61 and the linear brightness adjustment circuit 62 which are linear actuators corresponding to the output of the light receiving element 1. The linear contrast adjustment circuit 6 i The linear brightness adjustment circuit 62 is the same as the linear contrast adjustment circuit η shown in FIG. The output of the second light receiving element 2 is directly input, and the contrast and brightness can be linearly controlled as in Fig. 10. As mentioned above, the present invention automatically switches the light source 1 and 4 on and off according to the amount of external light, and Control the contrast and display brightness of the LCD panel 100, and automatically turn on the light source 114 in an environment with less external light, and increase the contrast and display brightness of the LCD panel 100. Therefore, in the illumination section (backlight section) 丨 丨When the illumination is low
C:\ProgramFiles\Patent\310664.ptd 第 21 頁 468 079 五、發明說明（18) 亦可得高對比顯示畫面以提高清晰性。 上述實施形態均以LCD板1〇〇為透過型，而照光部為背 後照明，設置於LCD板1〇〇背面的形態做說明，然將LCI)板ι〇〇 為反射型或反透過型，照光部為前方照明且設於LCI)板〗〇〇 前面，亦可一樣地實施本發明。 如上的實施形態，可適用於攜帶型電視機，手提攝影 機，數位靜態攝影機等，多使用於屋外而適合於攜帶型機 器。 [發明的效果] 由以上的說明可明瞭，係於具有取入外部光的集光部 及發出内部光之光源的附集光機構之液晶顯示裝置中，能 對應於外光量自動變化顯示特性，因此能於最適當的顯示 環境中進行顯示。 尤其如依申請專利範圍第2項記載的發明係對應於外 光量以變動液晶的最低透過率又若依申請專利範園第6項 記載的發明，係對應於外光量變動液晶顯示板的對比，故不 需切換操作而能經常以最適當的顯示環境下實行畫面顯 示。 又如申請專利範圍第8項記載的發明，於外光量達到預 定值以上時，可將前述光源關灯，因此外光量達到預定值以 上時可不須消耗電力。 又如申請專利範圍第10項及第11項記載的發明，外光 里在第1預定值以下時，光源係自動點灯，同時，將蓋部關 閉，外光量若超過第1預定值，則將蓋部開啟露出集光部，而C: \ ProgramFiles \ Patent \ 310664.ptd Page 21 468 079 V. Description of the invention (18) It is also possible to display the picture with high contrast to improve the clarity. In the above embodiments, the LCD panel 100 is a transmissive type, and the illuminating part is backlight. The configuration provided on the back of the LCD panel 100 is described. However, the LCI) panel is reflective or anti-transmissive. The illuminating unit is for front lighting and is provided in front of the LCI) board, and the present invention can be similarly implemented. The above embodiment can be applied to a portable television, a hand-held camera, a digital still camera, and the like, and is mostly used outdoors and is suitable for a portable machine. [Effects of the Invention] As can be understood from the above description, the liquid crystal display device having a light collection mechanism with a light collection unit that takes in external light and a light source that emits internal light can automatically change display characteristics corresponding to the amount of external light. Therefore, it can be displayed in the most appropriate display environment. In particular, if the invention described in item 2 of the scope of the patent application is the lowest transmittance of the liquid crystal corresponding to the amount of external light and the liquid crystal is changed, and if the invention described in item 6 of the patent scope of the patent application, it is a comparison of the liquid crystal display panel that changes the amount of external light. Therefore, it is possible to perform screen display under the most appropriate display environment without switching operation. Another example is the invention described in item 8 of the scope of patent application. When the amount of external light reaches a predetermined value or more, the light source can be turned off. Therefore, it is not necessary to consume power when the amount of external light reaches a predetermined value or more. As for the inventions described in the scope of application for patents No. 10 and No. 11, when the outside light is below the first predetermined value, the light source is automatically turned on, and the cover is closed. If the amount of outside light exceeds the first predetermined value, the The cover part is opened to expose the light collecting part, and
C:\Program Files\Patent\310664.ptd 第22頁 1_4^GLI9 五、發明說明（19) 且於外光量超過第2預定枯吐 3預定值時降低液晶顯示源二灯，於外光量超過第 過率，因此能經常以最適環同境時下二 [圖面的簡單說明] ㈣顯不環境下進仃顯不。 LCD二 =示本發明第1實施形態的附有集光機構之 示本發明使用之受光元件的輸出特性圖。 以外光量區分的示意圖。月第1、第2實施形態的動作狀態， LCD ^表不本發明第2實施形態的附有集光機構之 LCD的侧剖面圖及平面圖。 本發明第1實施形態的驅動電路方塊圖。 第6圖為表示亮度調整電路之一具體例。 特性Γ係圖圖為表示本發明對於液晶施加之電壓與透過率的 第8圖為表示對比調整電路之一具體例。 特性示本發㈣於液晶施加之電壓與透過率之 路的^ ^纟示本發明第1 #施形態以線性變動驅動電 第11圖為表示直線對比調整電路之—具體例。 第12圖為表示直線亮度調整電路之一具體例。 第13圖為表示本發明第1實施形態的數位控制電路方 塊圖。 C:\ProgramFiles\Patent\3i0664_ptd 第 23 頁 4 6 f 468079 五、發明說明（20) 第14圖為表示本發明 第1實施形 態中依線性變動之數 - 位控制電路方塊圖。 看 第15圖為表示本發明 第2實施形態中之控制電路方塊 ’、 圖 〇 第16圖為表示本發明第2實施形態中依線性變動的控 制電路方塊圖。 * 第17圖為表示LCD板的側剖面圖 0 第18圖為表示習用附 集光機構之LCD側剖面圖。 [符號的說明] 1 受光元件 2 第2受光元件 11 訊號處理電路 12 對比調整電路 13 亮度調整電路 14 位準調整電路 15 第1判定電路 16 第2判定電路 17 第3判定電路 18 第4判定電路 19 電源 20 蓋部驅動電路 31 電容器 32 電晶體 33 電源 34 電阻 35 開關 36 開關 37 第1定電壓源 38 第2定電壓源 41 動作放大器 42 電阻 :....) 43 電阻 44 電阻 45 開關 46 電壓控制放大器 7 51 判定電路 52 判定電路 53 電位調整電路 61 直線對比調整電路C: \ Program Files \ Patent \ 310664.ptd Page 22 1_4 ^ GLI9 V. Description of the invention (19) When the amount of external light exceeds the second predetermined value 3, the LCD display source 2 lamp is lowered. When the amount of external light exceeds the Overshoot rate, so you can often use the most suitable environment in the current situation [simple description of the drawing] LCD II = shows the output characteristic diagram of the light receiving element used in the present invention with a light collecting mechanism according to the first embodiment of the present invention. Schematic representation of the amount of light outside. In the operating states of the first and second embodiments, the LCD ^ represents a side cross-sectional view and a plan view of the LCD with a light-collecting mechanism according to the second embodiment of the present invention. Block diagram of a driving circuit according to the first embodiment of the present invention. FIG. 6 shows a specific example of the brightness adjustment circuit. The characteristic Γ diagram is a diagram showing a voltage and transmittance applied to the liquid crystal of the present invention. FIG. 8 is a specific example of a contrast adjustment circuit. The characteristics show that the voltage and transmittance applied to the liquid crystal are shown in the figure. ^ ^ 纟 shows the first embodiment of the present invention, which uses a linear variation to drive the electric power. Figure 11 shows a linear contrast adjustment circuit—a specific example. Fig. 12 shows a specific example of a linear brightness adjustment circuit. Fig. 13 is a block diagram showing a digital control circuit according to the first embodiment of the present invention. C: \ ProgramFiles \ Patent \ 3i0664_ptd Page 23 4 6 f 468079 V. Description of the Invention (20) Figure 14 shows the block diagram of the number-bit control circuit that varies linearly in the form of the first embodiment of the present invention. Fig. 15 is a block diagram of a control circuit in a second embodiment of the present invention ', Fig. 16 is a block diagram of a control circuit showing a linear change in the second embodiment of the present invention. * Fig. 17 is a side sectional view showing an LCD panel. 0 Fig. 18 is a side sectional view showing an LCD with a conventional light collecting mechanism. [Explanation of symbols] 1 light receiving element 2 second light receiving element 11 signal processing circuit 12 contrast adjustment circuit 13 brightness adjustment circuit 14 level adjustment circuit 15 first determination circuit 16 second determination circuit 17 third determination circuit 18 fourth determination circuit 19 Power supply 20 Cover drive circuit 31 Capacitor 32 Transistor 33 Power supply 34 Resistor 35 Switch 36 Switch 37 First constant voltage source 38 Second constant voltage source 41 Action amplifier 42 Resistor: ...) 43 Resistor 44 Resistor 45 Switch 46 Voltage control amplifier 7 51 Decision circuit 52 Decision circuit 53 Potential adjustment circuit 61 Linear contrast adjustment circuit
4 68 079 五、發明說明（21) 62 直線亮度調整電路 91 訊號處理電路 92 D/A變換電路 93 乘法器 94 加減法器 95 A/D變換電路 96 判定電路 100 LCD板 101 玻璃基板 102 晝素電極 103 配向膜 104 玻璃基板 105 共通電極 106 配向膜 107 液晶 108 封裝部 110 背光部 11 1 導光板 112 擴散部 113 反射部 114 光源 115 集光部 116 反射器 120 殼體 121 蓋部4 68 079 V. Description of the invention (21) 62 Linear brightness adjustment circuit 91 Signal processing circuit 92 D / A conversion circuit 93 Multiplier 94 Adder-subtractor 95 A / D conversion circuit 96 Decision circuit 100 LCD panel 101 Glass substrate 102 Electrode 103 Alignment film 104 Glass substrate 105 Common electrode 106 Alignment film 107 Liquid crystal 108 Encapsulation section 110 Backlight section 11 1 Light guide plate 112 Diffusion section 113 Reflection section 114 Light source 115 Light collection section 116 Reflector 120 Housing 121 Cover
C:\ProgramFiles\Patent\310664.ptd 第 25 頁C: \ ProgramFiles \ Patent \ 310664.ptd page 25
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| JP (1) | JP2000081608A (en) |
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- 1999-03-30 JP JP11089247A patent/JP2000081608A/en active Pending
- 1999-06-05 TW TW088109348A patent/TW468079B/en not_active IP Right Cessation
- 1999-06-25 US US09/344,629 patent/US6888528B2/en not_active Expired - Lifetime
- 1999-06-28 KR KR1019990024639A patent/KR20000006513A/en not_active Application Discontinuation
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| TWI381352B (en) * | 2003-12-19 | 2013-01-01 | Samsung Display Co Ltd | Display apparatus and method of driving the same |
| TWI394137B (en) * | 2006-09-15 | 2013-04-21 | Sony Corp | An imprinting device, a self-luminous display device, an image processing device, a display electronic device, an imprinting method, and a computer program product |
Also Published As
| Publication number | Publication date |
|---|---|
| US6888528B2 (en) | 2005-05-03 |
| JP2000081608A (en) | 2000-03-21 |
| KR20000006513A (en) | 2000-01-25 |
| US20020050974A1 (en) | 2002-05-02 |
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